package cn.com.hbhgkj.web;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import cn.com.hbhgkj.config.Constants;

public class AuthFilter implements Filter {

	public void destroy() {
		// TODO Auto-generated method stub

	}

	public void doFilter(ServletRequest arg0, ServletResponse arg1,
			FilterChain arg2) throws IOException, ServletException {
		HttpServletRequest request = (HttpServletRequest) arg0;

		HttpServletResponse response = (HttpServletResponse) arg1;
		String currentURI = request.getRequestURI(); 
		String targetURI = currentURI.substring(currentURI.indexOf("/", 1),
				currentURI.length()); 
		HttpSession session = request.getSession(false);
		if (!"/user_login.do".equals(targetURI) || !"user_regist.do".equals(targetURI)) {
			if (session == null || session.getAttribute(Constants.USER_SSID) == null) {
				response.sendRedirect(request.getContextPath() + "/");
				return;
			}
		}
		arg2.doFilter(request, response);

	}

	public void init(FilterConfig arg0) throws ServletException {
		// TODO Auto-generated method stub

	}

}
